As I understad, the best thing is to go to the nearest General Aviation airport and get 100LL Avgas.
I have a different issue with ethanol. The 5.5KVA generator in my motor-home is an Onan, and the handbook says "NO Etnahol". The generator draws from the main vehicle tank, and it's not easy to find stations selling ethanol free fuel on the West Coast of the US, and many that do can't handle a 32' long x 8' 6" wide x 12' high vehicle. Also, at 7.5 miles per US gallon, paying an extra 75 cents a gallon, even if I could find ethanol-free isn't very enticing. I just don't use the generator.